I'm working on bug.gd, our error search engine. Specifically, we just announced/launched an experimental tool for (any) Python interactive interpreter. Whenever you run into an error, you can do a quick search for how other people got past the same error.
Hmm.. that's actually very interesting.. My way of finding out error messages now is just to google it and then dive through all the results.
The bug.gd site is more like a 'recycling bin' that reminds you to come back and share your workaround so it's not lost for the next guy who searches. Searching on Google works for a lot of people, but this is a lot more focused and helps the community when it's used.
Long-term we'll be integrating client-side tools into every application/language we can.